Originally Posted by xd_1771
You'll get dual-channel assymetric. Dual channel symmetric (identical DIMMs) would be better, but with this you'll get an improvement over single channel (until your RAM usage creeps above 4GB). It's important to note that the OS does not optimize with channels in mind and may use more RAM than is usually necessary, pushing your RAM usage above 4GB when on a 4GB setup it might not actually do that, and then making you deal with the associated performance loss.
If this is an APU laptop, you should prefer identical dual channel or you risk bottlenecking the entire system.
Well, I JUST bought 2GB of RAM for the heck of it. It's only around 10 bucks anyway.
When I had 8GB (2x4GB) of RAM on the laptop, games ran many times better than it did with 4GB (1x4GB) and I supposed it was because of the dual channel configuration. However I started experiencing motherboard problems after a while so I had to move back to 4GB, but I was spoiled with 8GB of RAM, so now I'm trying to get the most of the lappy.
I benched DOTA 2 with 4GB, now I'm going to bench it with 6GB and I'll let you guys know the difference.
I can't get around to benching with 8GB, it just keeps crashing. :\